This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A069341 #10 Apr 28 2024 23:48:25 %S A069341 1,11309768,22779900825195,24471786016855404727, %T A069341 19494870504116920632360116,13160595194449992172457391361101, %U A069341 8025991217666841006376543207614110979,4574735745210954097724726033484092793843149,2485328828679106654042733426185318122603041421600 %N A069341 Number of 19 X n binary arrays with path of adjacent 1's from upper right corner to lower left corner. %Y A069341 Cf. 2 X n A048739, 3 X n A069325, 4 X n A069326, 5 X n A069327, 6 X n A069328, 7 X n A069329, 8 X n A069330, 9 X n A069331, 10 X n A069332, 11 X n A069333, 12 X n A069334, 13 X n A069335, 14 X n A069336, 15 X n A069337, 16 X n A069338, 17 X n A069339, 18 X n A069340, 20 X n A069342, n X n A069343, n X n symmetric A069344. %K A069341 nonn %O A069341 1,2 %A A069341 _R. H. Hardin_, Mar 16 2002 %E A069341 a(5)-a(9) from _Sean A. Irvine_, Apr 28 2024